CAN I GET HELP WITH THESE RELATIONAL ALGEBRA QUERIES PLEASE? YOU CAN ANSWER IN RELATIONAL ALGEBRA OR SQL. EITHER WAY IS FINE. THANKS IN ADVANCE!

Student(s) instructor with ID 15151 taught. We are interested in ID(s) and name(s) of this\those student(s). Student(s) that got a grade A for both courses: CS-315 and CS-347. classroom building string room_number number capacity number department dept_name string building string budget number course course_id string title string dept_name string credits number instructor ID number name string dept_name string salary number section course_id string sec_id number semester string year number building string room_number number time_slot_id string teaches ID number course_id string sec_id number semester string year number student ID number name string dept_name string tot_cred number takes ID number course_id string sec_id number semester string year number grade string advisor S_id number i_id number